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Finding the Fourth Proportional to 528,097.40, 792,923.70 and 409,902.20

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Solution

The fourth proportional to 528,097.40, 792,923.70 and 409,902.20 is: 615,456.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,097.40 : 792,923.70 = 409,902.20 : x
  2. Step 2: Convert to fraction form
    528,097.40/792,923.70 = 409,902.20/x
  3. Step 3: Cross multiply
    528,097.40x = 792,923.70 × 409,902.20
  4. Step 4: Simplify right side
    528,097.40x = 325,021,169,062.14
  5. Step 5: Solve for x
    x = 325,021,169,062.14/528,097.40
  6. Step 6: Final answer
    x = 615,456.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.